Gas-producer.



No. 650,497. Patented May I900. W. SWINDELL.

GAS PRODUCER.

(Application filed Mar, 9, 1900.)

(No Model.) 7 2 Sheets$heet I.

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GAS PRODUCER.

(Application filed Mar. 9, 1900.)

2 Sheets- Sheet 2 (No Model.)

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NITED STATES PATENT OFFICE.

\VILLIAM SWINDELL, OF ALLEGHENY, PENNSYLVANIA.

GAS-PRODUCER SPECIFICATION forming part of Letters Patent No. 650,497, dated May 29, 1960.

Application filed March 9,1900. Serial No. 75993. (No model.)

To all whom, it may concern:

Be it known that 1, WILLIAM SWIND'ELL, of Allegheny, in' the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Gas-Producers, of which improvement the following is a specification.

My invention relates to furnaces or producers employed for the generation of combustible gas by the combustion of low-grade or waste fuels; and its object is to provide means which shall be readily adaptable to gasproducers of the ordinary types, whereby air which is to be supplied either to the gas-pro ducer or to a separate furnace or burner may be preheated by the combustion of the fuel in the producer.

To this end my invention, generally stated, consists in the combination of a gas-generatihg chamber anda plurality of surrounding air-heating pipes or conduits; also, in the combination of a gas-generating chamber, independent air receiving chambers surrounding the lower end thereof, an upper air-discharge chamber, and a plurality of air-heating pipes or conduits built into the wall of the generatingchamber and connecting the receiving and discharge chambers.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a View in elevation of a gas-producer, illustrating an embodiment of my invention; Fig. 2, a horizontal section through the same on the line b b of Fig. 1; Fig. 3, a partial vertical section on the line a a of Figs. 2 and 5 Fig. 3, a similar section on an enlarged scale; Fig. 4, a vertical section on the line 0 c of Fig. 5; Fig. 5, a horizontal section on the line (1 d of Fig. 4; and Figs. 6 and 7, partial sections on the line e e of Fig. 4: and on an enlarged scale,showing, respectively, different settings of the air-heating pipes.

My invention is herein shown as applied in connection with a gas-producer having a generating-chamber or fuel-chamber 1, to which fuel is supplied through upper feed-openings 2 and feed-hoppers 3.. The main body of the generating-chamber 1 is of cylindrical hori- 'zontal section, and its lower portion is inwardly tapered or inclined toward the upper sides of two inclined grates 44, which are loated in the upper portion of the asli pit 5. A gas-discharge'flue 6, controlled by a valve or damper 6, leads fromthe upper portion of the generating-chamber to a desiredpoint of discharge, in this instance delivering gas through two end ports 6? into the end of a drying-chamber 7, atwhich point the gas is mixed with heated air and burned. The general structural features above described are those which in different forms were known in the art prior to my invention and are not therefore in and of themselves claimed as of my present invention.

In the practice of my invention the producer,which is preferably of the general class or type of that above described, but which may be of any other known and preferred construction, is provided with a gas-generating chamber 1, which is substantially surrounded near its lower end by air-receiving chambers 8, which are formed in the annular wall of the generating-chamber, preferably independently one of another, as shown in Fig. 2, each chamberbeing provided with an air-admission port or opening 9, controlled bya door 10. The doors of adjoining receiving-chambers may be connected with operating mechanism whereby the air-admission portof one chamber may be closed coincidently with and proportionately to the opening of that ofan adjoining chamber. cent doors 10 (shown in Fig. 1) are connected to opposite ends of a chain 11, passing'over' sheaves 12, journaled on the outside of the pro-- ducer, the chain 11 being connected to an operating-rod 13, by movement of which in either direction closing movement may be imparted to one of the connected doors and opening movement to the other.

The upper end of the gas-generating chamber is closed by an arched top or roof 14, through which pass the feed-openings 2 and suitable poke-holes 15. An annular air-discharge chamber 16, divided into two sections or compartments by a partition 17, is formed in the roof 14:, adjacent to its periphery, and extends around the same to the sides of the central gas-discharge flue 6, each compartment of the-chamber 16 communicating with an air-delivery fine 18, which extends along one side of the gas-discharge flue 6 to a discharge-port 19, the outer end of which adjoins To this end theadja ICO the delivery-port 6 of the flue (3. In order to increase the heating-surface in the chamber 16, projections 20 maybe formed on its inner wall, as shown in Fig. 5.

The air receiving and discharge chambers S and 16 are connected by a plurality of air heating pipes'or conduits 21, which may be either of metal or clay and which are built into the wall of the gas-generatinglchamber as nearly as may be entirely around the same, said pipes providing avenues for the traverse of air from the receiving to the discharge chamber, and in which the air which is supplied for admixture with the gas is'prelim inarily heated to a comparatively-high d egree. Theair-heating pipes may be set in any suitableand preferred manner-as, for example, being separated by bricks, as indicated in Fig. 6, or by bodies of sand, as in Fig. 7. As shown in the drawings, the air-heating pipes of two of the air-receiving chambers 8 lead into one compartment of the air-discharge chamber 16, and those of the other two airreceiving chambers lead into the opposite compartment. Air may thus be shut off, as desired, by thedoors 10 from portions of the set of pipes, which may be allowed to become highly heated while air is passing through other portions of the set, after which air may be admitted to the more highly-heated pipes and shut off from those of lower temperature, as in the operation of a regenerative furnace.

The provision of a plurality of air-heating pipes or conduits, substantially as above described, attains substantial advantages, both structural and resultant, which are not within the capacity of producer constructions in which fines or chambers in the walls are employed, as instanced in the art prior to my present invention. The flues heretofore proposed are expensive to construct and found to rapidly deteriorate by breaking away in service, while the separate heating-pipes may be inexpensively set and are satisfactorily durable. They further provide the greatest practicable area of heating-surface and enable the air-supply to be thoroughly heated prior to itsadmiXture with the gas for combustio'n..

I claim as my invention and desire to secure by Letters Patent-- 1. The combination, in a gas-producer, of a and a plurality of air-heating pipes built into the wall of the gas-generating chamber and connecting the air-receiving and airdischarge chambers. .7

3. The combination, in a gas-producer, of a gas-generating chamber, separate independent air-receiving chambers formed in the lower portionof the producer-wall an upper air-discharge chamber in the producer-wall, and a plurality of air-heating pipes built into the wall of the gas-generating chamber and c'onnectingthe air receiving and discharge chambers.

at. The combination, in a gas-producer, of a gas-generating chamber, separateindependent air-receiving chambers formed in the lower portion of the producer-wall, an air discharge chamber located in the upper portion of the producer-wall and divided into independent compartments, a plurality of airheating pipes built into the wall of the gasgenerating chamber and connecting the air receiving and discharge chambers,and means for regulating air-supply from the air-receiving chambers to either compartment of the air-discharge chamber.

5. The combination, in a gas-producer, of a gas-generating chamber, a gas-discharge flue leading therefrom, an air-receiving chamber formed in the lower portion of the wall of the producer, a valve-controlled air-supply port or opening in said chamber, an air-discharge chamber formed in the upper portion of the wall of the producer, air-discharge fines lead ing therefrom on opposite sides of the gasdischarge flue, and a plurality-of air-heating pipes built into the wall of the gas-generating chamber and connecting the air receiving and discharge chambers. I

WVM. SWINDELL.

\Vitnesses:

J. SNOWDEN' BELL,

CLARENCE A. WILLIAMS. 

